While your computer is running, counters in the operating system are incremented to track various system activities. System activities that are tracked are as follows:
Central processing unit (CPU) utilization
Buffer usage
Disk and tape input/output (I/O) activity
Terminal device activity
System call activity
Context switching
File access
Queue activity
Kernel tables
Interprocess communication
Paging
Free memory and swap space
Kernel Memory Allocation (KMA)
The Solaris software provides several tools to help you track how your system is performing. The following table describes these tools.
Table 22–3 Performance Monitoring Tools
Command |
Description |
For More Information |
---|---|---|
sar and sadc commands |
Collects and reports on system activity data | |
ps and prstat commands |
Displays information about active processes | |
vmstat and iostat commands |
Summarizes system activity data, such as virtual memory statistics, disk usage, and CPU activity | |
swap command |
Displays information about available swap space on your system |
“Configuring Additional Swap Space (Tasks)” in System Administration Guide: Basic Administration |
netstat and nfsstat commands |
Displays information about network performance | |
Sun Enterprise SyMON |
Collects system activity data on Sun's Enterprise level systems |
Sun Enterprise SyMON 2.0.1 Software User's Guide |